Obamacare is more popular than ever. A new Gallup poll found that 55% of respondents approved of Obamacare. That's the first time since Gallup began asking about Obamacare back in November 2012 that its approval rating had climbed above 50%.

Zuma receives the backing of his party. South African President Jacob Zuma has received the backing of his African National Congress party, which has rejected calls for Zuma to step down, Reuters says. The South African rand is weaker by 1.5% at 13.8350 per dollar.

US economic data is heavy. ADP Employment Change will be released at 8:15 a.m. ET before Markit PMIs and ISM nonmanufacturing cross the wires at 9:45 a.m. ET and 10 a.m. ET. The minutes from the March Federal Open Market Committee meeting are due out at 2 p.m. ET. The US 10-year yield is unchanged at 2.36%.